Chew Brook Water Body Moderate ecological status
Attributes Water Body ID GB112069061300 Water Body Type River Hydromorphological designation heavily modified NGR SE0116303833 Catchment area 2828.25 ha Length 4.361 km Catchment area 28.283 km2 Surveillance Water Body No Classifications Classification Item 2019 2022 Ecological Moderate Moderate Biological quality elements Poor Poor Fish Poor Poor Invertebrates Good Good Physico-chemical quality elements High High Ammonia (Phys-Chem) High High Dissolved oxygen High High Phosphate High High Temperature High High pH High High Supporting elements (Surface Water) Moderate Moderate Mitigation Measures Assessment Moderate or less Moderate or less Chemical Fail Does not require assessment Priority hazardous substances Fail Does not require assessment Benzo(a)pyrene Good Dioxins and dioxin-like compounds Good Heptachlor and cis-Heptachlor epoxide Good Hexabromocyclododecane (HBCDD) Good Hexachlorobenzene Good Hexachlorobutadiene Good Mercury and Its Compounds Fail Perfluorooctane sulphonate (PFOS) Good Polybrominated diphenyl ethers (PBDE) Fail Priority substances Good Does not require assessment Cypermethrin (Priority) Good Fluoranthene Good Other Pollutants Does not require assessment Does not require assessment
Why do all water bodies have a chemical status of fail?
Investigations into classification status Classification Element Cycle Year Status Outcome Fish 2 2016 Good Very certain there is a problem
Reasons for not achieving good (RNAG) and reasons for deterioration (RFD) All reasons (RFDs and RNAGs) attributed to the classification elements in
this water body.
Reason Type SWMI Activity Category Classification Element More information RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Polybrominated diphenyl ethers (PBDE) Details RFD Monitoring Site Changed (RFD only) Not applicable No sector responsible Fish Details RNAG Physical modification Other (not in list, must add details in comments) Urban and transport Mitigation Measures Assessment Details RNAG Physical modification Barriers - ecological discontinuity Industry Fish Details RNAG Physical modification Other (not in list, must add details in comments) Water Industry Mitigation Measures Assessment Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Mercury and Its Compounds Details
Reasons for not achieving good status by business sector The issues preventing waters reaching good status and the sectors
identified as contributing to them. The numbers in the table are
individual counts of the reasons for not achieving good status with a
confidence status of 'confirmed' and 'probable', where the latest
classification is less than good status. There may be more than one
reason in a single water body. Note, table does not include reasons for
deterioration.
Significant water management issue Physical modifications Pollution from waste water Pollution from towns, cities and transport Changes to the natural flow and level of water Invasive non-native species Pollution from rural areas Pollution from abandoned mines Agriculture and rural land management 0 0 0 0 0 0 0 Industry 1 0 0 0 0 0 0 Mining and quarrying 0 0 0 0 0 0 0 Navigation 0 0 0 0 0 0 0 Urban and transport 1 0 0 0 0 0 0 Water Industry 1 0 0 0 0 0 0 Local & central government 0 0 0 0 0 0 0 Domestic general public 0 0 0 0 0 0 0 Recreation 0 0 0 0 0 0 0 Waste treatment and disposal 0 0 0 0 0 0 0 Other 0 0 0 0 0 0 0 No sector responsible 0 0 0 0 0 0 0 Sector under investigation 0 0 0 0 0 0 0 Total 3 0 0 0 0 0 0
Objectives Classification Item Status Year Reasons Ecological Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Biological quality elements Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Fish Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Invertebrates Good 2015 Physico-chemical quality elements Good 2015 Ammonia (Phys-Chem) Good 2015 Dissolved oxygen Good 2015 Phosphate Good 2015 Temperature Good 2015 pH Good 2015 Hydromorphological Supporting Elements Not assessed 2015 Supporting elements (Surface Water) Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Mitigation Measures Assessment Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Specific pollutants Not assessed 2015 Chemical Good 2063 Natural conditions: Chemical status recovery time Priority hazardous substances Good 2063 Natural conditions: Chemical status recovery time Benzo(a)pyrene Good 2015 Dioxins and dioxin-like compounds Good 2015 Heptachlor and cis-Heptachlor epoxide Good 2015 Hexabromocyclododecane (HBCDD) Good 2015 Hexachlorobenzene Good 2015 Hexachlorobutadiene Good 2015 Mercury and Its Compounds Good 2040 Natural conditions: Chemical status recovery time Perfluorooctane sulphonate (PFOS) Good 2015 Polybrominated diphenyl ethers (PBDE) Good 2063 Natural conditions: Chemical status recovery time Priority substances Good 2015 Cypermethrin (Priority) Good 2015 Fluoranthene Good 2015 Other Pollutants Does not require assessment 2015
Protected areas PA Name Id Directive More information South Pennine Moors UK0030280 Special Area of Conservation Natural England Peak District Moors (South Pennine Moors Phase 1) UK9007021 Special Protection Area Natural England
Monitoring sites which have been used to classify this water body Shows which sites were used for classification for which years within
each cycle.
Monitoring Site Cycle 1 Cycle 2 Cycle 3 MERSEY/RIVER TAME/CHEW BROOK/TACH01/ 29188 2013, 2011, 2014, 2012, 2010, 2009 2015, 2013, 2016, 2019, 2014 2019, 2022 68459 68459 2009 2013 CHEW BROOK ABOVE CONFLUENCE WITH TAME 88001948 2014, 2013, 2009, 2012 2015, 2014, 2016, 2019 2022, 2019 RIVER DON CATCHMENT/SCOUT DIKE/ABOVE INGBIRCHWORTH RESERVOIR/ 36580 2013, 2011 161357 161357 2015, 2016, 2014, 2019 2019 MERSEY/RIVER TAME/CHEW BROOK/TACH02/ 29190 2013, 2011, 2014, 2012, 2010, 2009 2015, 2013, 2016, 2019, 2014 2019, 2022 MERSEY/RIVER TAME/CHEW BROOK/TACH01A/ 29528 2010, 2009 CHEW BROOK AT STABLE BRIDGE 88001946 2011, 2014, 2012, 2010, 2013, 2009 2015, 2016, 2014, 2019 2022, 2019 RIVER AIRE CATCHMENT/RIVER AIRE TRIBUTARIES/SILSDEN BECK D/S RES/ 28978 2011, 2010, 2009 67857 67857 2009 2015, 2013, 2016